High pure(Al O >99.9%) and low natron(Na O<0.0%) superfine powder α-Al O is produced successively by using the following physical and chemical process: de-silica, de-iron, de-alkali, grinding, dispersion, separation and calcination.
High pure(Al O >99.9%) and low natron(Na O<0.0%) superfine powder α-Al O is produced successively by using the following physical and chemical process: de-silica, de-iron, de-alkali, grinding, dispersion, separation and calcination.
通过脱硅、除铁、去碱、研磨、分散、分级、分选、煅烧等一系列的机械与化学方法 ,成功地制取了高纯 (Al O >99 9 % )、超细、低钠 (Na O <0 0 % )α Al O ,。